Best price: 1.99 (Halfords)
Type: Nylon-mesh-wrapped sponge
For: Effective and cheap
Against:Requires some effort
This nylon-wrapped sponge worked well, but with just water added it needed a bit of effort to remove the insects. The mesh provided just the right amount of abrasion without scratching. Ideally this sponge should be used in combination with a spray product.
Cheap and widely available.
Ease of Use:
Straightforward and relatively quick. Machine washable.
It's safe to use on all car finishes and effective in dealing with a wide range of surface deposits.